Nonperturbative Lorentz Violation and Field Quantization
| Autor: | Kostelecky, Alan, Lehnert, Ralf, Schreck, Marco, Seradjeh, Babak |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Regimes of Lorentz-violating effective field theories are studied in which departures from Lorentz symmetry are nonperturbative. Within a free toy theory exhibiting Lorentz breakdown involving an operator of mass dimension three, it is shown that conventional methods suffice to achieve field quantization and Fock-space construction. However, the absence of an observer-invariant energy-positivity condition requires physical input beyond the free theory for the unambiguous identification of a ground state. An investigation of the role of thermodynamics in this context is instigated. Comment: 20 pages, 2 figures |
| Databáze: | arXiv |
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